Author: Richard A. Fowell (fowell@netcom.com)
Date: 20:16:54 03/05/00
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On March 05, 2000 at 18:25:04, Djordje Vidanovic wrote: <snip> >Ernst, hello again. I used my PII-400 under Win 2000 and here's the Shredder 3 >analysis (Shredder sees the light after about 12 seconds, that is the march >towards the enemy King): <snip> Will Bryant's freeware chess program, "Screamer" for the Macintosh, ( http://pweb.netcom.com/~wbryant/screamer.html ) finds the king march in 4 seconds on my 180 MHz Macintosh, and mates Black in 13 moves in selfplay at 5 seconds/move (that would be 2.25 sec/move on a 400 MHz machine). Note White's moves 1-6: White Queen covers Black's Queening square, then White's King charges straight for Black's King. I've included here both Screamer's self-play game, and its analysis log when given a long time to examine the position. Screamer sticks with the king march plan from 4 seconds on. ================================================ Screamer's selfplay game at 5 sec/move, 180 MHz: ================================================ Listing for the game and final position Starting Position: k7/1b6/8/8/2Q5/8/6p1/6K1 w - - Move White Black ------------------------------------------------------ 001 (c4c5) Qc5 (a8b8) Kb8 002 (g1f2) Kf2 (b8a8) Ka8 003 (f2g3) Kg3 (a8b8) Kb8 004 (g3f4) Kf4 (b7c6) Bc6 005 (c5b6) Qb6+ (c6b7) Bb7 006 (f4e5) Ke5 (g2g1) g1=N 007 (b6g1) Qxg1 (b8c7) Kc7 008 (g1c5) Qc5+ (c7d7) Kd7 009 (c5d6) Qd6+ (d7c8) Kc8 010 (d6b6) Qb6 (c8b8) Kb8 011 (e5d6) Kd6 (b8a8) Ka8 012 (d6c7) Kc7 (b7d5) Bd5 013 (b6b8) Qb8++ 8 k Q . . . . . . 7 . . K . . . . . 6 . . . . . . . . 5 . . . b . . . . 4 . . . . . . . . 3 . . . . . . . . 2 . . . . . . . . 1 . . . . . . . . a b c d e f g h =================================================================== Screamer's deep analysis: =================================================================== The Current Search Time: 86400 seconds PLY NODES TIME SCORE PV ______________________________________________ 3/00 1621 0:00 +4.25 Qb5 Kb8 Kf2 4/00 2407 0:00 +4.15 Qb5 Kb8 Qe5+ Kc8 Kf2 4/02 3300 0:00 +4.25 Qg8+ Ka7 Kf2 Kb6 Ke3 5/00 8410 0:00 +4.15 Qg8+ Ka7 Kf2 Kb6 Qb8 Ka6 5/03 13114 0:00 +4.25 Kf2 Kb8 Qg8+ Kc7 Qg7+ Kb6 Ke3 6/00 21707 0:00 +4.35 Kf2 Kb8 Qc5 Ba8 Qe5+ Ka7 Qe8 7/00 39944 0:01 +4.35 Kf2 Kb8 Qc5 Ka8 Qb6 Kb8 Ke2 8/00 128568 0:03 +4.25 Kf2 Ka7 Qb5 Ka8 Qc5 Kb8 Ke2 Be4 8/21 193316 0:04 +4.35 Qc5 Kb8 Kf2 Ka8 9/00 206948 0:04 +4.45 Qc5 Kb8 Kf2 Ka8 Kg3 Kb8 Kf4 Bd5 Ke5 10/00 349266 0:07 +4.50 Qc5 Kb8 Kf2 Ka8 Kg3 Kb8 Kf4 Bd5 Ke5 Bc4 11/00 4210761 1:24 +4.40 Qc5 Kb8 Kf2 Ba8 Qe5+ Ka7 Qd4+ Kb8 Qg7 Bc6 Ke3 Kc8 Kd4 12/00 5995486 1:58 +4.45 Qc5 Kb8 Kf2 Ba8 Qe5+ Ka7 Qd4+ Kb8 Qf4+ Ka7 Qe3+ Kb8 Qg3+ Ka7 Ke3 Kb6 Kd4 13/00 25408221 8:10 +4.40 Qc5 Kb8 Kf2 Ba8 Qe5+ Ka7 Qd4+ Kb8 Qf4+ Ka7 Qe3+ Kb8 Qc1 Bd5 Qg5 Bc6 Ke3 14/00 32830000 10:31 +4.40 Qc5 Kb8 Kf2 Ba8 Qe5+ Ka7 Qd4+ Kb8 Qf4+ Ka7 Qe3+ Kb8 Qc1 Bd5 Ke3 Kb7 Kd4 Be6 15/00 39724821 12:55 +4.45 Qc5 Kb8 Kf2 Ba8 Qb6+ Bb7 Kg3 Kc8 Kf4 Ba8 Ke5 Bb7 Kd6 Kb8 Qc7+ Ka7 Qg7 16/00 54837940 17:41 +4.45 Qc5 Kb8 Kf2 Ba8 Qb6+ Bb7 Kg3 Kc8 Kf4 Ba8 Ke5 Bb7 Kd6 Kb8 Qc7+ Ka7 Qa5+ Kb8 Qb6
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